feat(F-098): completed feature

project/src/modules/store-settings/api/settings.routes.ts

@@ -98,6 +98,13 @@ export async function registerStoreSettingsRoutes(
     const input = parseJson(updateSettingsSchema, request.body);
     const updates: string[] = [];
     const values: unknown[] = [];
+    const identityUser = await deps.pool.query<{ id: string }>(
+      `SELECT id FROM identity_users WHERE id = $1`,
+      [user.id],
+    );
+    // Backoffice users are a separate table. Keep the audit FK valid when the
+    // authenticated backoffice id has no corresponding identity_users row.
+    const updatedBy = identityUser.rowCount ? user.id : null;
     let i = 1;
     for (const [field, dbKey] of Object.entries(SETTING_KEYS)) {
       const val = input[field as keyof typeof input];
@@ -115,7 +122,7 @@ export async function registerStoreSettingsRoutes(
           await deps.pool.query(
             `INSERT INTO store_settings (key, value, updated_by) VALUES ($1, $2, $3)
              ON CONFLICT (key) DO UPDATE SET value = $2, updated_at = NOW(), updated_by = $3`,
-            [dbKey, val, user.id],
+            [dbKey, val, updatedBy],
           );
         }
       }